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SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) (Tables) | 12 Months Ended
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Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract] |
Schedule of Quarterly Financial Data | The following tables present selected quarterly financial data for the years ended December 31, 2018 and 2017 (in thousands, except per share amounts):
| Three Months Ended
| March 31, 2018 |  | June 30, 2018 |  | September 30, 2018 |  | December 31, 2018
Total revenues | $ | 74,607 |  |  | $ | 84,107 |  |  | $ | 83,448 |  |  | $ | 95,115 |
Cost of goods sold | 22,885 |  |  | 20,916 |  |  | 19,065 |  |  | 23,979 |
Total operating expenses | 81,544 |  |  | 77,566 |  |  | 79,400 |  |  | 82,852 |
Net income (loss) | (10,680 | ) |  | 2,564 |  |  | (640 | ) |  | 8,285 |
Basic and diluted net income (loss) per common share | $ | (0.26 | ) |  | $ | 0.06 |  |  | $ | (0.02 | ) |  | $ | 0.20 |
| Three Months Ended
| March 31, 2017 |  | June 30, 2017 |  | September 30, 2017 |  | December 31, 2017
Total revenues | $ | 69,283 |  |  | $ | 70,934 |  |  | $ | 67,335 |  |  | $ | 79,078 |
Cost of goods sold | 24,581 |  |  | 23,811 |  |  | 18,228 |  |  | 21,295 |
Total operating expenses | 83,333 |  |  | 86,714 |  |  | 70,907 |  |  | 70,613 |
Net income (loss) | (19,866 | ) |  | (19,743 | ) |  | (7,597 | ) |  | 4,595 |
Basic and diluted net income (loss) per common share | $ | (0.52 | ) |  | $ | (0.49 | ) |  | $ | (0.19 | ) |  | $ | 0.11 |
For periods where the Company reported a net loss, no potentially dilutive securities were included in the computation of diluted net loss per share.

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=84173487&loc=d3e1280-108306 + Details
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